Finding the Fourth Proportional to 101,259.86, 139,739.01 and 56,547.86

Step by Step Solution

1. Step 1: Write the proportion equation
   101,259.86 : 139,739.01 = 56,547.86 : x
2. Step 2: Convert to fraction form
   101,259.86/139,739.01 = 56,547.86/x
3. Step 3: Cross multiply
   101,259.86x = 139,739.01 × 56,547.86
4. Step 4: Simplify right side
   101,259.86x = 7,901,941,974.02
5. Step 5: Solve for x
   x = 7,901,941,974.02/101,259.86
6. Step 6: Final answer
   x = 78,036.27